Static Mechanical Properties and Microscopic Analysis of Hybrid Fiber Reinforced Ultra-High Performance Concrete with Coarse Aggregate
Table 8
Strength enhancement coefficient and hybrid effect coefficient of hybrid fibers.
Specimen types(PiSj)
βfc
αc
βft
αt
βEc
αE
P0S0
1.00
1.00
1.00
1.00
1.00
1.00
P0S0.5
1.25
1.00
1.30
1.00
1.15
1.00
P0S1.0
1.32
1.00
1.50
1.00
1.19
1.00
P0S1.5
1.38
1.00
1.30
1.00
1.24
1.00
P0.05S0
1.10
1.00
1.19
1.00
1.12
1.00
P0.05S0.5
1.15
0.83
1.47
0.95
1.03
0.80
P0.05S1.0
1.33
0.92
1.18
0.66
1.23
0.92
P0.05S1.5
1.39
0.92
1.55
1.01
1.22
0.88
P0.1S0
1.09
1.00
1.15
1.00
1.17
1.00
P0.1S0.5
1.22
0.90
1.10
0.73
1.21
0.90
P0.1S1.0
1.24
0.86
1.74
1.01
1.06
0.76
P0.1S1.5
1.47
0.98
1.78
1.19
1.16
0.80
P0.15S0
0.92
1.00
0.93
1.00
1.17
1.00
P0.15S0.5
1.17
1.01
1.16
0.96
1.18
0.87
P0.15S1.0
1.36
1.12
1.58
1.14
1.18
0.85
P0.15S1.5
1.32
1.03
1.81
1.50
1.07
0.74
Note.: PiSj, where i and j are the volume contents of polypropylene and steel fiber, respectively; βfc, βft, and βEc are the compressive strength, flexural strength, and the strength enhancement coefficient of the elastic modulus under hybrid fiber, respectively; αc, αt, and αE are the hybrid effect coefficients of the three, respectively.
